By Tetradium
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Strictoporellina cribrosa uncommon Decorah Formation. Least common of the porous frondose types. Pretty solid flat with pores ridden it. No other variability in shapes.
Photo Information for 100_8983
Taken with EASTMAN KODAK COMPANY KODAK DX7590 ZOOM DIGITAL CAMERA
- 8.5 mm
- 1/40
- f f/3.0
- ISO 100